Two new species of Oreocharis Benth. from Fan Si Pan, the highest mountain in Vietnam (Sa Pa) are described and illustrated. Oreocharis
grandiflora W.H.Chen, Q.H.Nguyen & Y.M.Shui, is similar to O.
flavida Merr. from Hainan province, China, but differs mainly by its larger and infundibuliform corolla, stamens adnate to the base of the corolla tube and stamens coherent in two pairs. The second, Oreocharis
longituba W.H.Chen, Q.H.Nguyen & Y.M.Shui, is similar to O.
hirsuta Barnett, endemic to northern Thailand, but mainly differs in its pubescence, coherent stamens and glabrous filaments.
The accurate maintainability prediction and evaluation of software applications can improve the designing management for these applications, thus benefiting designing organizations. Therefore, there is considerable research interest in development and application of sophisticated techniques which can be used to build models for both predicting and evaluating software maintainability. In this paper, we investigate some ideas based on Machine Learning, Natural Language Processing, Fuzzy Logic, and Systematic Model of Software Maintenance. The idea to compute Interactive Index and the maintainability of software system is useful to study the relation between maintainability prediction and maintainability evaluation in the whole software process. An model basing on fuzzy matrix and BP neural network is built up. It’s approved that there are application value of using this model based on BP neural network to predict and evaluate the software maintainability.
A new fern species, Polystichum jinpingense, a member of P. subg. Haplopolystichum sect. Haplopolystichum, is described and illustrated from southeastern Yunnan, China. Polystichum jinpingense is most similar to P. subacutidens in plant size and having numerous pinnae, but the former has thinner (0.7–0.9 mm in diam.) rachis, oblong pinnae, pinna margins undulate, and pinna apex cuspidate, whereas the latter has thicker (1.1–1.4 mm in diam.) rachis, triangular pinnae, pinna margins serrate, and pinna apex acuminate. Polystichum jinpingense has an extremely narrow distribution and is classified as Critically Endangered (CR) following IUCN Red List Criteria.
We describe Begonia caryotarum (B. sect. Platycentrum), a new species from southeast Yunnan, China, found in rock crevices at the foot of limestone hills in Caryota obtusa forest at elev. 700–900 m. The new species is most similar to B. hekouensis in having the same vestiture type on the petioles, flower tepal number, placentation structure, and ovary shape and color, but differs mainly in its leaf blade being asymmetric with an acute apex, tepals pinkish- to orangish-red, larger staminate tepals, anther connectives slightly extended, stigma once spiraled. Its conservation status is categorized as Critically Endangered [CR B2ab (ii, iv), C2a(i)].
A new species of Ebenaceae, Diospyros xylocarpa Y. M. Shui, W. H. Chen & Sima, from China and Vietnam, is described and illustrated. The new species is similar to D. phuketensis Phengklai, but differs in its bigger and densely ochre brown villous leaves, more pairs of lateral veins, shorter petioles, 8-locular ovaries, xyloid fruits with nearly square fruiting calyx and much shorter fruiting peduncle and eight seeds. The new species is also similar to D. dasyphylla Kurz, but differs in its leaf blades with a cuneate to round base, eight stamens and bigger and xyloid fruits.
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